How did Star Scotty lose his middle finger?

There is no known person or character named "Star Scotty" who has lost a middle finger. It's possible you're thinking of a fictional character or a person whose story you haven't heard the full details of.

Could you provide more context or information about "Star Scotty"? For example:

* Is this a character from a specific book, movie, TV show, or game?

* Is this a real person you know?

* Are there any other details you remember about the situation?

With more information, I may be able to help you find the answer you're looking for.